Automatic cut-off for gas or vapor burners



N0. 6|7,27I. Patent-ed lan. 3, |899. C. BARGAMIN.

AUTOMATIC CUT-DFF FOB GAS 0R VAPR BURN-ERS.

[Application lad Nov. 24, 1897.) No Model.) 2 Shets-Sheet I.

, Q25 g to@ @www2/ow@ 23 7 VWM/L No. 6l7,27|. Patented lan. 3, |899.

C. BARGAMIN.

AUTOMATIC CUT-OFF FOR GAS OR'VAPR BURNERS (Application led Nov. 24,1897.) (No Model.) 2 Sheets-Sheet 2,

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CLIFFORD BARGAMIN, OF NEIVPORT NEWS, VIRGINIA.

AUTOMATIC CUT-OFF FOR GAS OR VAPOR BURNERS.

S'EECIFIGATION forming part of Letters Patent N o. 617,271, datedJanuary 3, 1899.

A Application filed November 24,1897. Serial No. 659,660. (No modell) Tall whom t may con/cern.'

Beit known that I, CLIFFORD BARGAMIN, a citizen of the United States,residing at Newport News,in the county of Warwick and State of Virginia,have invented certain new and.

useful Improvements in Automatic Out-Offs for Gas or Vapor Burners; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a novel gasolenefurnace provided withautomatic cut-off mechanism which when the invention is embodied in aplumbers furnace or the like will automatically cut off the supply ofliquid fuel to the burner when the metal-pot is removed.

In order that the invention may be more clearly understood, it maybewell to state that 'ordinarily' where gasolene is employed as a Y fuelfor heating metal-pots, soldering-irons,

or similar devices such use is accompanied by an incidental Waste, dueto the fact that care is not taken to cut off the supply, and thefurnace is left blazing while the artisan manipulates the metal-pot oriron.

The primary object of this invention is to so construct the burner thatthe fuel-supply will be cut off as soon as the element to be heated. isremoved.

The invention further consists in providing Y a valve-casing in thefeed-pipe of the burner at a point intermediate of the burner proper andthe main valve, and, further, in providing mechanism for automaticallyactuating the valve in the first-named valve-casing to permit thepassage of liquid fuel to the burner when the pot or iron is in placeand for closing the valve and thereby cutting off the supply when eitherof the devices named is removed.

The invention consists, further, in certain novel details ofconstruction and arrangement, which will be hereinafter described andclaimed.

Referring to the drawings, Figure 1 is an elevation, partly in section,of a plumbers furnace` provided with my automatic cut-off. Fig. 2 is asectional view, on a somewhat enlarged scale, of the automaticvalve-casing, a portion of the feedpipe, and the valve-actu atingmechanism. Fig. 3 is a perspective view of a gasolene-stove providedwith my invention, and Fig. t is a detail view of the automatic cut-offapplied to the stove illustrated in Fig. 3.

-Referrin g to the numerals on the drawings, l indicates a furnace-baseof any suitable or ordinary construction provided with a cock 2, throughwhich air under pressure may be supplied to the furnace, or, moreproperly speaking, to the reservoir, and 3 indicates the cap closing thesupply-orice, through which the gasolene is designed to be fed, asusual.

4t indicates the pot-stand, consisting of a baseeplate 5, provided witha central flameopening 6, tted with a suitable grating 7, upon which themetal-pot 3 is designed in practice to rest. The base-plate 5 issupported by a suitable number of standards 9, supported by the topplate of the fu rnacebase, and a suitable sheetemetal casing 11,0fslightly largerdiameter than the diameter of the metalpot, extendsupwardly from the edges of the plate 5 and is designed to confine theiiame issuing from the burner to be described between the metal-pot andcasing in order to economize the heat generated thereby.

12 indicates the burner feed-pipe, extending upwardly from the furnaceand provided immediately thereabove with a controllingvalve 13, abovewhich is located the valvecasing 14 of my automatic cut-off valve 15,constructed and arranged in the manner to be described. The feed-pipe 12extends nearly 'to the plate 5 of the pot-stand, where it connectswiththe upper end of the burner-coil 16, extending downwardly into whatmay be termed a fuel-cup 17 and terminating in a perforated burner-tube18, extending diametrically across the bottom of the cup, which latteris preferably supported by a number of pendants 19, secured at theirupper extremities to the plate 5.

The device thus far described, with the exception of the valve-casing14, is of ordinary construction, and I shall now proceed to adescription of the automatic cut-off mechanism designed to be controlledby the metal pot or soldering-iron placed within the potcasing forheating.

The valve-casing la cf the automatic cut.- off valve is provided with acircuitous passage in order to form a vertical valve-seat IOO 21 for thereception of the horizontally-arranged cut off valve. 15 referred to.The valve 15 is provided with an elongated stem extending through apacking-gland 22, provided with the usual screw-cap 23 and preferablylined with asbestos or similar material, which will serve as a packingfor the stem and which will be practicably indestructible under theaction of the liquid fuel employed. In order to provide against theescape of the fuel or any accumulated gases from the feedpipe throughthe gland 22, I prefer to incase the latter within a gland-casing 24,provided with a screw cap or dome 25, which screws upon the end of thecasing and retains in place a rubber or other suitable disk Ksecuredaxially to the valve-stem by means of a pair of diminutive nuts 27,screwed upon the stem upon opposite sides of said disk. In this manneran absolutely liquid and gas tight connection is formed, and in additionto this function the disk 2G by reason of its resiliency will serve toassist in reseating the valve when it has been opened in a manner whichwill be presently made apparent.

2S indicates a guide-lug projecting from the valve 21 opposite the stem15 and which is designed to move within a guide-recess 29, formed in ascrew-cap 30, screwed into the side of the valve-casing opposite thegland.

31 indicates a horizontal bracket secured in any suitable manner at oneend to the feedpipe immediately above the valve-casing 14, and to theopposite extremity, as shown in Figs. 1 and 2, there is pivoted abell-crank lever 32, provided at one extremity with anantifriction-roller 33, which bears against a l valve-actuating spring34, depending from the bracket 31 and connected in any suitable mannerto the outer extremity of the valvestem 15. The lever 32 is pivotallyconnected at its opposite end to an upwardly-extending rod 35, passingthrough an aperture 36 provided for that purpose in the base-plate 5,and carries upon its upper extremity a plate 37, upon which themetal-pot or solderingiron is designed to rest.

Inasmuch as it is desired that the automatic cut-off should not becomplete, but should permitjust suflicient fuel to pass to the burner tokeep the same lighted, a small auxiliary port 38 (shown in dotted lines,Figs. 2 and 4) may be provided in the valve for the purpose of allowingthe required quantity of gasolene to pass to the burner when the valveis in a closed position. Under normal conditions the spring 34 and theresilient disk 26 will retain the Valve in the closed position, asillustrated in Fig. 2 of the drawings, and the plate 37 will be elevatedslightly above the base-plate 5 of the pot-casing.

Supposing now that it is desired to heat the metal-pot, the latter isplaced within the casing and upon the plate 37,which is depressed,causing the lever 32 to be swung upon its pivot and to force the spring34 in a direction to open the cut-off valve. A sufficient supply of fuelto produce the necessary flame will thus be allowed to pass through thevalve-casing under the pressure of oil contained in the reservoir; butas soon as the metal-pot or iron has been removed from the plate 27 thecombined action of the spring 34 and the rubber disk 26 will be exertedto close the valve and elevate the plate.

It will be understood, of course, that the manner of igniting the deviceis the same as is ordinarily followed, the drip-oil within the cup beinginitially ignited to produce the vaporization of the gasolene as itpasses through the coil, the .gas finally escaping from the burner andbeing ignited to form the blast, which is directed upwardly through thegrating in the plate 5 and around the walls of the metal-pot.

It will thus beseen that I have invented a novel, inexpensive, andefficient device which may be applied to fuel-burners of anyconstruction and which when so applied will effect the automaticregulation of the fuel-supply.

IVhile the present embodiment of my invention appears at this time to bepreferable, I do not vdesire to limit myself to theV structural detailsillustrated and described, but reserve the right to change, modify, orvary them at will within the scope of the protection claimed.

I'Iaving thus described the invention, what is claimed as new is- In anautomatic cut-off mechanism of the character described, the combinationwith a valve-casing,of a horizontally-arman ged automatic cut-off valvetherein, provided with an auxiliary port and with an elongated stem, agland surrounding the stem and provided with an asbestos packing, agland-casing inclosing the gland, a resilient disk adj ustably securedupon the valve-stem, a cap for the gland-casing designed to close theend thereof and to secure the disk, a spring connected to the saidvalve-stem beyond the casing, a bell-crank lever operatively connectedwith the spring, an upwardly-extending rod pivoted to said lever, and aplate upon the extremity of the rod, substantially as specified. i

In testimony whereof I affix my signature 1n presence of two witnesses.

CLIFFORD BARGAMIN.

Witnesses:

A. G. FIFER, A. C. BARGAMIN.

